xfmtool
manipulate MNI transformation files
xfmtool <operation> [args]
DESCRIPTION
xfmtool is a Perl script for manipulating MNI .xfm transformation files. It provides several operations for combining, inverting, and extracting transformations without invoking separate tools for each operation.
Supported operations include:
- compose: Concatenate two or more transformations into a single combined transformation (equivalent to sequential application)
- invert: Compute the inverse of a transformation
- extract: Extract a specific transformation from a compound transform file
This tool provides a convenient single-command interface for common transform manipulation tasks that would otherwise require separate calls to xfmconcat, xfminvert, etc.
OPTIONS
<operation>- The operation to perform. One of: compose, invert, extract.
For compose:
xfmtool compose <xfm1> <xfm2> [xfm3 ...] <output.xfm>- Concatenate transformations in order and write the result.
For invert:
xfmtool invert <input.xfm> <output.xfm>- Compute and write the inverse transformation.
For extract:
xfmtool extract <input.xfm> <output.xfm>- Extract a transformation component from a compound transform file.
EXAMPLES
Compose two transformations:
xfmtool compose linear.xfm nonlinear.xfm combined.xfm
Invert a transformation:
xfmtool invert forward.xfm inverse.xfm
AUTHOR
Louis Collins, Peter Neelin - McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University.
COPYRIGHTS
Copyright © 1993 by Peter Neelin